Vacuum cleaner



Jan. 2l, 1936- J. F, HEUBERGER VACUUM CLEANER Filed Dec. 22, 1932 lNvr-:NToR JQ, .r BYAl M w ATTORNEY Patented Jan.. 21, 1936 UNi-TED* STATES- PATENT-orner;

2,028,215 vAcUUM CLEANER Josepnjrnearien neubergef, stockholm, sweden, assigner to Electrolux Corporation, Dover. Del., a corporation of Delaware Application December 22, 1932, Serial No. 648,397 In Germany December 24, 1931 claims. (01.183-51) My invention relates tovacuumcleaners and more particularlyv to vacuum cleaners of the enclosed bag type. Still more particularly, my invention relates to dust bags for vacuum cleaners. 5 The objects of my invention include the provision of a readily manufactured, seamless, re-

placeable dust bag made of paper or thel like -having a large surface and, in combination therewith, means f or supporting the dust bag to prevent enlargement and rupture thereof.

The invention, its nature, objects and advan-V tages will become clear from the following description taken inconjunction with the accompanying drawing forming a partLof this specifi,-v

cation, and of which:

Fig. 1 is=an assembly view 'of a vacuum cleaner" including a longitudinal sectional view througha cleaner unit embodying the invention; and

'Fig. 2 vis a side elevation of a dust bag in .2U accordance with the invention and as used in the it may be movable. It is spaced from the inside l surface of the casing.l The screen bag is prefer- 1 ably made of wire screening formed of relatively heavy wires and affording large openings. As

' showriin Fig. 1, the screen 'bag may be secured to the casing as indicated at 20.

The` casing I0 encloses a fan 28 driven by a rmotor l29 for producin'giow of airthrough the The cover I2 is removable andis held in position by means of spring clips 2l, which may be of known construction, The dust bag has a flange 22 at its operrehd which is clamped be tween the cover I2 and a ring 23 secured to the barrel I l. The vacuum cleaner unit is supported on runners 30 whereby the unit may `he drawn over the oor by pulling -on thel hose 9.' 'I'he casing I9 is thereby mounted horizontally-'above 5() a,horizo'ntal surface. f

, In accordance with the invention, the dust bag is made of paper and preferably is made from a at'sheet of paper. The'paper must be of such nature (porous) as to allow the passage ofl air a6 therethrough without too muchresistance, but

end as shown in Fig. 1). A ring 24 is placed on the inside of the bag at the open mouth and is -for the bag. so that the bag is unlikely to .be rupto prevent the passage of all or substantially all dust which may. enter the cleaner unit through the hose 9. The dust bag is preferably made by bending a at sheet of suitable paper over a suitable mould or form having a generally cylin drical shape of the general form of the dust bag. The paper may be folded or wrinkled to form a substantially cylindrical structure open at the' top and closed at the bottom (the right-hand bent to form the flange 22, which is clamped between the cover I Zand the ring -23 of he casing. Ring 24 is preferably placed 'on e mould Vbefore bending the paperf Ring 24 may be made 15 of paper or cardboard. A ring 2B, which may also made of paper or cardboard, is preferably disposed around the outside of the open end of the bag after the folding epeation, and may be l `tied around the bag as by`s ring 21. The two rings 24 and 26 may be glued to' 'the paper of the bag and suitable filling material may be inserted to prevent leakage'of air between the rings. Itis preferable that all the dust bag, including the wrinkled portion and the bands 24 25 and 26, be made of a combustible material so that the bag may be removed and destroyed with the dust in it, as by being thrown into a fire.

For this purpose, also, it is desirable to make the bands 24 hnd26 of a frangible material s that 30 the bag may be crumpled up with the dust in it.

-Thedust bag is inserted into what I term the screen bag or open-work structure I8 and then the cover I2 is attached.. The fan causes flow of -air in the direction o'f the arrows; Thusfair 55 is sucked in throughthe nozzle 8 and through the hose 9 into the dust bag I9 whereby dust is deposited and the' air vpasses on through the fan" and out through the opening lI5'.

The open-work screen bag or structure I ,8 sup- 40 ports the bag so that vthe. folds will not be drawn by the air current out against the inner cylin- `drical surface of the barrel II. It will be seen that such a bag provides a very large surface for collection of dust andpa'ssage of air. A large 45 surface' is desirable in order to decrease the air resistance. It will be'appreci'ated that if the paper dust bag alone were used and it were heavily laden with dust,the .pull on the bag might rupture the material and this would be disadvantageous, particularly in a vacuum cleaner of the enclosed bag type. The screen bag overcomes this difliculty by providing a rsupporting surface tured.

i While I have described a preferred form of my invention, it will be understood that various mod- Aiiications may be made within -the spirit and' scope of the invention, so for instance the seamless paper bag may be manufactured directly from paper pulp'either'by pressing' the pulp into the form desired or by spraying the pulp on a core having the shape of the bag to be manufactured. l

- What I claim is:

`1. 'I'he combination with a vacuum cleaner unit including a casing and air iiow producing means in saidcasing, of an open-work bag'v shaped structure in said casing, and a seamless paper dust bag adapted toviit into said open-.work

structure and be supported throughout substantially its entire length thereby, said dust bag at the mouth of the bag, one of 'said rings being formed with 'an outwardly extending annular iiange.

3. In a vacuum cleaner, means for producing iiow of air, and a seamless dust bag made from a singlesheet of air pervious paper located in the path of air ow and having inner and outer rings made of frangible material at the mouth of the bag, one of said rings being formed with an outwardly extending annular flange.

4. In a vacuum cleaner, means for producing flow of air, a seamless dust bag made from a single sheet of air-pervious paper located in the path otiair flow, and a ring having a portion substantially parallel .to the side of said bag and an outwardly extending iiange, the mouth of said bag being secured to the parallel portion. of said l ring.

v5. In a vacuum cleaner, means for producing ow of air, a seamless dust bag made from a single sheet of 'air-pervious paper located in the path of air flow, and a ring made of frangible material and having a portion substantially parallelto the side of said bag and an outwardly extending iiange, the mouth of said bag being secured to the parallel portion of said ring.

JOSEPHIRIKEDRICH HEUBERGER. 

